/*
 * Copyright (c) 2017. tangzx(love.tangzx@qq.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.tang.intellij.lua.debugger;
import com.intellij.execution.filters.Filter;
import com.intellij.execution.filters.OpenFileHyperlinkInfo;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.tang.intellij.lua.psi.LuaFileUtil;
import org.jetbrains.annotations.Nullable;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 *
 * Created by tangzx on 2017/6/10.
 */
public class LuaTracebackFilter implements Filter {
    private Project project;

    public LuaTracebackFilter(Project project) {

        this.project = project;
    }

    @Nullable
    @Override
    public Result applyFilter(String line, int entireLength) {
        //lua.exe: Test.lua:3: attempt to call global 'print1' (a nil value)
        //stack traceback:
        //Test.lua:3: in function 'a'
        //Test.lua:7: in function 'b'
        //Test.lua:11: in main chunk

        Pattern pattern = Pattern.compile("\\s*((/+)?[^<>\\\\|:\"*? ]+):(\\d+):");
        Matcher matcher = pattern.matcher(line);
        if (matcher.find()) {
            String fileName = matcher.group(1);
            int lineNumber = Integer.parseInt(matcher.group(3));
            VirtualFile file = LuaFileUtil.findFile(project, fileName);
            if (file != null) {
                final OpenFileHyperlinkInfo hyperlink = new OpenFileHyperlinkInfo(project, file, lineNumber - 1);
                final int textStartOffset = entireLength - line.length();
                final int startPos = matcher.start(1);
                final int endPos = matcher.end(3) + 1;
                return new Filter.Result(startPos + textStartOffset, endPos + textStartOffset, hyperlink);
            }
        }
        return null;
    }
}
